class_docstr: Fix the backbones variable names for pretrained weight
code: def model_type(self):
      return getattr(self.model, "_model_type", "")
  
file_path: PaddleHub/modules/image/classification/resnet50_v2_imagenet/name_adapter.py
label_desc: Use image node_id 2 for calling the NameAdapter obj's underlying member method code with example usage: obj.model_type() and returns: getattr